212221321313 has 8 divisors (see below), whose sum is σ = 231093998400. Its totient is φ = 194118957648.

The previous prime is 212221321309. The next prime is 212221321321. The reversal of 212221321313 is 313123122212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212221321313 - 2² = 212221321309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212221321303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192577781 + ... + 192578882.

It is an arithmetic number, because the mean of its divisors is an integer number (28886749800).

Almost surely, 2^212221321313 is an apocalyptic number.

It is an amenable number.

212221321313 is a deficient number, since it is larger than the sum of its proper divisors (18872677087).

212221321313 is a wasteful number, since it uses less digits than its factorization.

212221321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385156711.

The product of its digits is 864, while the sum is 23.

Adding to 212221321313 its reverse (313123122212), we get a palindrome (525344443525).

The spelling of 212221321313 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty-one thousand, three hundred thirteen".